What term describes a horse which has too much set to the hock?

The term that describes a horse which has too much set to the hock is "sickle hock." This condition occurs when the angle of the hock joint is excessively acute, causing the horse's leg to have a distinct curvature. Sickle hocked horses typically present with a higher than normal setting of the hock, which can affect their movement and overall balance. This physical attribute can lead to functional issues, especially in performance horses, as the unnatural angle may hinder their ability to stride properly or powerfully.

In contrast, the other terms refer to different conformational deficiencies. "Post-legged" describes a horse whose hocks are straightened backwards, creating a more vertical appearance to the hock joint. "Camped out" refers to hind limbs that are set farther back than usual, leading to a stance where the horse appears to be leaning backwards. "Straight legged" generally describes legs that lack the necessary flexion at the joints, giving a more rigid appearance. Understanding these terms helps in evaluating and addressing conformational issues in horses.